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Finding the Fourth Proportional to 66,353.21, 91,568.58 and 37,672.13

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Solution

The fourth proportional to 66,353.21, 91,568.58 and 37,672.13 is: 51,988.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,353.21 : 91,568.58 = 37,672.13 : x
  2. Step 2: Convert to fraction form
    66,353.21/91,568.58 = 37,672.13/x
  3. Step 3: Cross multiply
    66,353.21x = 91,568.58 × 37,672.13
  4. Step 4: Simplify right side
    66,353.21x = 3,449,582,991.83
  5. Step 5: Solve for x
    x = 3,449,582,991.83/66,353.21
  6. Step 6: Final answer
    x = 51,988.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.